| 8mm Gasser | |
| Origin: | Austria-Hungary |
| Type: | Revolver |
| Used By: | Austria-Hungary Kingdom of Italy Kingdom of Yugoslavia |
| Design Date: | 1898 |
| Is Si Specs: | yes |
| Case Type: | Rimmed, straight |
| Bullet: | 8.11 |
| Neck: | 8.56 |
| Base: | 8.60 |
| Rim Dia: | 9.68 |
| Case Length: | 27.00 |
| Length: | 36.00 |
| Filling: | smokeless powder |
| Filling Weight: | 0.35g |
| Is Si Ballistics: | yes |
| Bw1: | 125.8 |
| Btype1: | FMJ |
| Vel1: | 240 |
| En1: | 235 |
| Bw2: | 126.1 |
| Btype2: | FMJ |
| Vel2: | 250 |
| En2: | 255 |
| Balsrc: | 2. Fiocchi |
The 8mm Gasser is a rimmed cartridge used in the Rast-Gasser M1898 revolver and a small number of converted Mauser C96 pistols. Its bullet is cylindro-ogival and is of the jacketed type.